Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Bearings & Bushings |
| Origin | - |
| Brand | NSK |
| Series | MR Series Miniature |
| Material | High Carbon Chrome Steel |
| Precision Grade | ISO Class 4 (ABEC-7) |
| Seal Type | ZZ (Metal Shield) or 2RS (Rubber) |
| Cage Material | Pressed Steel |
| Country of Origin | Japan |
| Lubrication | Factory Pre-lubricated Grease |
| Load Capacity | Radial and Axial |
| Common Applications | Drones, RC Models, Dental Handpieces |
Anonymous
Mar 06, 2026
Rating: 5/5
Reliable for repairs
We use these for repairing miniature motors. Consistent quality across different inner diameter sizes. Fast shipping too.
Anonymous
Mar 05, 2026
Rating: 5/5
Perfect fit
Ordered the 5mm size for a custom gearbox project. Tolerances are tight and fitment was exact. No play whatsoever.
Anonymous
Feb 28, 2026
Rating: 4/5
Good performance
Low noise operation under load. Packaging was secure. Would prefer if bulk discounts were available for larger orders.
Anonymous
Feb 24, 2026
Rating: 5/5
Exceptional Smoothness
These bearings are incredibly smooth. I used the 3mm inner diameter for my racing drone motors and the RPM performance is noticeable.
Anonymous
Feb 13, 2026
Rating: 4/5
Great quality, pricey
Genuine NSK product as described. They work perfectly but are a bit more expensive than generic brands. You pay for precision.
Q: Do I need to add additional lubrication before use?
A: No, these come factory pre-lubricated with high-speed grease ready for immediate installation.
Q: What is the difference between ZZ and 2RS seals?
A: ZZ offers metal shields for lower friction, while 2RS provides rubber seals for better contamination protection.
Q: Can I return the item if I ordered the wrong inner diameter?
A: Yes, unused items in original packaging can be returned within 30 days according to our return policy.
Q: Is this product compatible with standard 1mm shafts?
A: Yes, please select the variant with 1mm Inner Diameter from the options menu to ensure compatibility.
Q: Are these bearings suitable for continuous high RPM operation?
A: Yes, the MR Series is designed for high-speed applications such as miniature motors and spindles.
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